Hart & Cooley® Ceiling/Sidewall Register, 2-Way, Series: 661, 10 x 4 in, 9-7/16 in Duct Width, 3-1/2 in Duct Height, 11-1/4 in Overall Width, 1-5/8 in Overall Depth, 450 to 145 cfm, 20 deg Deflection, 1/3 in Blade Spacing, Steel, Bright White Enamel, Domestic